Coating of Highly Porous Fiber Matrices by Atomic Layer Deposition

被引:35
作者
Kemell, Marianna [1 ]
Ritala, Mikko [1 ]
Leskela, Markku [1 ]
Groenen, Roland [2 ]
Lindfors, Sven [3 ]
机构
[1] Univ Helsinki, Dept Chem, FI-00014 Helsinki, Finland
[2] NV Bekaert SA, B-8550 Zwevegem, Belgium
[3] Picosun Oy, FI-02150 Espoo, Finland
基金
芬兰科学院;
关键词
Aluminum oxide; Atomic layer deposition; Iridium; Porous metals; Reactor comparison;
D O I
10.1002/cvde.200800710
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The potential of atomic layer deposition (ALD) in the coating of highly porous, 0.5 mm thick, metal fiber matrices is explored. Three different reactor types are compared for ALD of Al2O3 thin films from trimethylaluminum and water. Both an evacuation-type and a flow-type process are successful in forming conformal Al2O3 coatings on the fibers. The coatings are able to protect the fibers against electrochemical corrosion and thermal oxidation. In addition, a metallic Ir thin film is deposited by ALD on one of the Al2O3-coated fiber matrices. This kind of a structure could be used, for example, as a catalytic filter.
引用
收藏
页码:347 / 352
页数:6
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